Wire cable



. A. MOR-row- WIRE CABLE Filed Jan. 27, 1927 Oct. 9, 1928.

` I N VEN TOR. fier/7a@ /Va/e A TTORNE Y.

.Patented '9,1928lr ironToN, or SEATTLE, WASHINGTON.

This invention to an improvement in wire cables designedmore 'particularly for use in connection with logging'loperations panying drawings 1nl which:

wherein the cable travels over a .gregyed pulley/ v .w

` The main object of the inventionasv the,4 .provision of a cablel in which. theouter strands conform in curvature to the curvature of the grooved pulley, whereby4 the wear incident to the normally circular strand is.

. avoided and the breaking up'o said strands into slivers and threads,so .common cables of this type, is entirely dispensed/wlth,

The inventionis illustrated' inthe. accom- Fi re 1 is an enlarged sectionalview showing a. multifstrand cable constructed in accordance with the.' present invention.

'Figure 2 is vasectional view on an en Vlarged scale. of one of thev outerfstrands,

showin the curvature of the pulley engajg-v in'g sur ace;A

. The improved' cable is shown as a mum.A section cable made up of a center of hemp or the like, as at 1, and a series of independh entsections 2 each madev up jof an imier wire 'vsurrounded by circular wires oi small diameter 4 and an outer section" layer'of'wire strands 5. A Ordinarily,

cular' so that in cooperatlonwith the curvature of the' pulley,' they are` gradually worn away; That is to say, in the of thecable,

into.:

. the outer'circular strandsa-re' wornaway until the present :a surface .which is concentric e surface of the ing away o the strands outer tot-re 'resentan'arc of a complete circle p ulley waan) rea p the's'amef slivers and thread-like projections j whichare,rof course, ol)j ectionable.Y- Y

appnciga' medi'suua'ry 2 7, 1937. aerial misma?.

In the present invention, these outer 4o 'strands 5 are formed on their outer surfaces at 6 on a plane which coincides with the curvature 7 of the pulley; Therefore, there 1s no wearing down of the' cable in'cident'to the non-conforlng surfaces between the 45 cable strands a v d pulley and consequently the cable wears smooth and even and without slivers.V i

. Therefore, the cable originally constructed of a certain diameter with a certain strength, 50 does not reduce its diameter as rapidly and 4 therefore reduce its strength when the outer f strands are constructed as outlined in the present invention as when said strands are f constructed vin the usual manner.

What I claim to be new is: A cable composed of 'a central core of vhemp strands andl -aplu'rality' of adjacent subcables arran d around the hem core, all in contact with each other and with the 60 hemp vcore each subcable comprising a central round ,core and intermediate rou-'nd strands smaller in diameter than the 'diameter of the central roundcore and surround-vI ing the .central round core and outer strands |35 ater. in'diam'eter than the. diameter of the intermediate stra-nds and surrounding the intennediate round strands, each o f the outer strands being semi-circular in cross section vupon their nether surfaces and the outer sur- 3Q@ formed face of each said outer strand be' roun' A the central'hemp core.

.r In testimony whereof- I airmy signature;

j ARTHUR'MORTON- 

